Answer :
Answer:
[tex]2\ ly=1.89\times 10^{16}\ m[/tex]
Explanation:
The question says that, "The closest star to the earth is 2 light years away. Calculate this distance in SI units".
Given that,
The distance between the closest star and the Earth is 2 light years.
The SI unit of distance is m. It means we need to convert light years to meters. We know that,
[tex]1\ ly=9.461\times 10^{15}\ m[/tex]
2 light-years means,
[tex]2\ ly=2\times 9.461\times 10^{15}\ m\\\\=1.89\times 10^{16}\ m[/tex]
So, the required distance is equal to [tex]1.89\times 10^{16}\ m[/tex].